IO 



WORKS published by LONGMANS & CO. 



NATURAL 



HISTORY and 

 SCIENCE. 



PHYSICAL 



Professor Helmholtz' 



Popular Lectures on Scientific Sub- 

 jects. Translated by E. Atkinson, 

 F. C. S. With numerous Wood Engrav- 

 ings. 8vo. I2J-. 6d. 



Professor Helmholtz on 



the Sensations of Tone, as a Physio- 

 logical Basis for the Theory of Music. 

 Translated by A. J. Ellis, F.R.S. 

 8vo. 36.C 



Ganot's Natural Philo- 

 sophy for General Readers and 

 Young Persons ; a Course of Physics 

 divested of Mathematical Formulas and 

 expressed in the language of daily life. 

 Translated by E. Atkinson, F.C.S. 

 Third Edition. Plates and Woodcuts. 

 Crown Svo. "Js. 6d. 



Ganot's Elementary 



Treatise on Physics, Experimental 

 and Applied, for the use of Colleges 

 and .Schools. Translated by E. Atkin- 

 son, F.C.S. Ninth Edition. Plates 

 and Woodcuts. Large crown Svo. 15^. 



Arnott's Elements of Phy- 

 sics or Natural Philosophy. Seventh 

 Edition, edited by A. Bain, LL.D. 

 and A. S. Taylor, M.D. F.R.S. 

 Crown Svo. Woodcuts, 12^. 6d. 



The Correlation of Phy- 

 sical Forces. By the Hon. Sir W. 

 R. Grove, F.R.S. &c. Sixth Edition, 

 revised and augmented. Svo. 15J. 



Weinhold's Introduction 



to Experimental Physics ; including 

 Directions for Constructing Physical 

 Apparatus and for Making Experiments. 

 Translated by B. Loewy, F.R.A.S. 

 Svo. Plates & Woodcuts 311. 6d. 



A Treatise on Magnet- 

 ism, General and Terrestrial. By H. 

 Lloyd, D.D. D.C.L. Svo. ioj. 6d. 



Elementary Treatise on 



the Wave-Theory of Light. By 

 H. Lloyd, D. D. D. C. L. Svo. ioj. 6d. 



Fragments of Science. 



By John Tyndai.l, F.R.S. Sixth 

 Edition, revised and augmented. 2 vols, 

 crown 8vo. 16s. 



Heat a Mode of Motion. 



By John Tyndall, F.R.S. Fifth 

 Edition in preparation. 



Sound. By John Tyndall, 



F.R.S. Third Edition, including 

 Recent Researches on Fog-Signalling. 

 Crown Svo. price ior. 6d. 



Contributions to Mole- 

 cular Physics in the domain of 

 Radiant Heat. By John Tyndall, 

 F.R.S. Plates and Woodcuts. Svo. 16s. 



ProfeSSOr Tyndall's Re- 

 searches on Diamagnetism and 

 Magne-Crystallic Action ; including 

 Diamagnetic Polarity. New Edition 

 in preparation. 



Professor Tyndall's Lec- 

 tures on Light, delivered in America 

 in 1872 and 1873. With Portrait, Plate 

 & Diagrams. Crown Svo. Js. 6d. 



Professor Tyndall's Les- 

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 Institution, 1875-6. With 58 Wood- 

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ProfessorTyndall's Notes 



of a Course of Seven Lectures on 

 Electrical Phenomena and Theo- 

 ries, delivered at the Royal Institution. 

 Crown Svo. is. sewed, is. 6d. cloth. 



ProfessorTyndall's Notes 



of a Course of Nine Lectures on 

 Light, delivered at the Royal Institu- 

 tion. Crown Svo. is. swd., is. 6d. cloth. 



Principles of Animal Me- 

 chanics. By the Rev. S. IIaughton, 

 F.R.S. Second Edition. 8\o. 21s. 



